Lapses in Israeli intelligence amid Hamas attack come as 'a complete shock,' says analyst

Many people are questioning how Israeli intelligence services were unable to detect and deter Hamas's attack on Saturday that left hundreds of Israelis dead, while others were taken hostage. Subsequent Israeli airstrikes killed hundreds of Palestinians. Colin Clarke, director of research at The Soufan Group, a global intelligence and security consultancy, discussed the possibilities with The World's host Marco Werman.